a newly formed group, newtown united is advocating what it calls sensible gun legislation. >> we have 20 children trying to point us the way. if we don't follow their lead, we've failed them and their deaths are in vein. >> reporter: friends say in recent years, nancy lanza felt uncomfortable leaving her son adam at home without being is up veer sized -- being supervised. back to you. >> thank you. >>> at a hearing on capitol hill, state d officials admitted to weaknesses in security related to the deadly september 11th attack on the u.s. consulate in libya. jamie dupree joins us via skype from washington, d.c. with what we're learning from in morning's hearing and from a scathing report on the attack. good morning, jamie. >> reporter: good morning, tori. that hearing is still going on in the senate foreign relations today being chaired by john kerry, the massachusetts senator that many people expect to be the next secretary of state. kerry is starting out the hearing, saying obviously mistakes were made by the state department. that was reinforced by the report that you mentioned whi